Asphalt Counter Flow Mixing Plant

Cap 40 to 140 TPH

Asphalt Counter flow Mixing Plant

For sale counterflow asphalt mixing plant from Indian manufacturer. Counter-flow asphalt mixing plant is preferred for low fuel consumption and better Hot Mix Asphalt. Also available low maintenance and containerized design.

The flow of aggregates is towards the burner flame and hence counter flow type. This also ensures that the heating of aggregates is done with minimum fuel comparitively and low maintainance. The mixing drum is separate ensuring that bitumen is never exposed to extreme temperatures. The counter flow Asphalt Drum mixing Plant is available in production ranges from 40 tph to 120 tph. Capacities above 120 tph are tailor made.

Counterflow asphalt plant means the flow of aggregates and burner flame will be opposite. It is not like the traditional drum mixing asphalt plant. In this machine the aggregates enter the higher point of the drum and flow towards the lower end of the drum. This is same like the normal drum mixer. The difference here is the presence of the burner unit. Burner unit is on the opposite end of the drum unit. This makes the flow of aggregates and direction of the burner flame opposite and hence the name counterflow asphalt mixer.

Single Drum :- As the name suggests this is s single drum machine. The basic working concept is the same like double drum Mixing plant. The two drums are combined into one drum and burner is also into the opposite end like double drum design. The first half of the drum is heating zone and the second half of the drum is mixing zone. Burner equipped here is a long nose burner whose nozzles are long extended towards the center of the drum. This means that the flame starts from the center of the drum. Mixing of the material takes places behind the flame.

Double Drum :-  This includes two inline drums lined close to each other. The first drum is only for drying the aggregates. It is the bigger drum of the two and has burner places opposite to the aggregate entry point. Pollution control is done at the entry point of the aggregate. This means that dust is sucked out before the mixing takes place. As the aggregates move towards the other drum they get closer to the burner flame and hence efficient mixing takes place. As the aggregates are transferred to the other drum they will be mixer properly with bitumen and filler material.

Process Of Asphalt Counter Flow Mixing Plant

Similar to a parallel flow plant, a counter flow plant uses a continuous process. Similar to a parallel flow plant, the flow of aggregates controls the entry and amount of bitumen and minerals here as well.

The flow of aggregates, which is opposite from the burner flame location and is the key differentiating factor, gives counter flow its name. Even the exhaust gas flow originates at the drum’s entrance for the aggregates. Behind the burner flame is where the bitumen, RAP, and minerals are added. This bitumen, RAP, and mineral addition may occur in the same drum, a different drum, or a different mixer.

This keeps minerals, RAP, and bitumen from coming into contact with the flame. A counter-flow plant’s key benefit is that it will enable the addition of RAP to the mixture.

Similar to parallel-flow asphalt mixers, the addition of liquid bitumen, RAP, and minerals is managed by a variable speed motor and coordinated with the flow of aggregates.

We can observe that there is only one drum in this picture. The addition of RAP and liquid bitumen is immediately behind the burner flame, and the flow of aggregate and flame are in the opposite directions.

There are two distinct chambers: the first is a counter-flow drum used only for drying new aggregates, and the second is a mixing device shaped like a pug mill used to combine heated aggregates with RAP and liquid bitumen.

Two drums are stacked one on top of the other here. Only the drying of the aggregates takes place in the drum that received the virgin aggregates because it is equipped with a burner on the opposite side. A drum that permits the introduction of liquid bitumen and RAP covers this drum.Through perforations in the inner drum, aggregates are transported to the outer drum after heating.

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